import java.util.Scanner;

//已知一磅等于0.4535924千克，输入千克数，转换成磅数，并输出

public class JavaDi2_2 {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		double b = 0.4535924;
		System.out.println("请输入千克");
		int a = input.nextInt();
		System.out.println(a / b + "磅");
	}
}
